MP4 to BMP — Format Comparison & Online Converter
Fast, instant MP4 to BMP conversion. No signup required. Just drop your .mp4 file and get .bmp in seconds.
Batch Settings
HDR data will be tone-mapped
Your MP4 file may contain HDR (High Dynamic Range) data. BMP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost.
Converting to BMP won't restore lost quality
Your MP4 file has already undergone lossy compression. Converting to BMP preserves what's left — it prevents further degradation from re-saving — but it will not magically sharpen a blurry image or recover discarded audio frequencies.
Some metadata may not survive
Your MP4 file may contain MP4 atoms, chapter markers metadata. BMP has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
Wide color gamut → sRGB
Your MP4 file uses a wide color gamut (BT.709, BT.2020 (HDR10, Dolby Vision)). BMP uses standard sRGB. Highly saturated colors outside the sRGB range will be clipped or compressed — this is most noticeable in vivid reds, greens, and blues.
Color depth reduction: 265-bit → 32-bit
MP4 stores up to 265 bits per channel, but BMP supports only 32 bits. You may notice banding in smooth gradients (like sky or skin tones) where subtle color transitions are lost.
MP4動画は、動きのある豊かな表現に最適ですが、時として「この一瞬を画像として切り取りたい」「動画の一コマをデザイン素材として使いたい」と考えることはありませんか？特に、マンガの制作過程で動画から特定の表情やポーズを抜き出したり、ビジネス資料に動画の一場面を説得力のある静止画として組み込んだりする際、BMP形式への変換が非常に役立ちます。BMPは非圧縮ゆえに画質の劣化がなく、ピクセル単位での精密な作業を要する場面でその真価を発揮します。このページでは、大切なMP4動画から選び抜かれた瞬間を、高品位なBMP画像として手軽に変換する方法をご紹介します。動画の持つ時間軸の制約から解放され、一枚の画像が語る力を最大限に引き出しましょう。
- アニメやマンガの資料作成
- プレゼン資料のアイキャッチ
- 伝統芸能の型を記録
日本のデザイン現場では、特に細やかな線の表現や、CMYK変換を前提とした印刷物の制作において、BMPの持つ非圧縮の特性が重宝されることがあります。また、縦書きのデザインに合わせた画像調整の際も、劣化のない元画像は作業のしやすさに直結します。
About MP4 to BMP Conversion
MP4 (introduced 2001) and BMP (introduced 1986) are both video formats, but they differ in important ways. MP4 (MPEG-4 Part 14) is the universal video container supporting H.264/H.265 codecs — plays on virtually every device. BMP is an uncompressed raster format that preserves every pixel but produces very large files.
Full Name: MP4 uses MPEG-4 Part 14, while BMP uses Bitmap Image. Compression: MP4 uses Lossy, while BMP uses None (uncompressed). Transparency: MP4 uses —, while BMP uses No.
When you convert MP4 to BMP, the goal is to preserve files for long-term archival. Your MP4 file may contain HDR (High Dynamic Range) data. BMP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost. Understanding these technical differences helps you choose the right format for your workflow.
Your MP4 file is decoded and re-encoded as BMP. The conversion involves 4 steps: (1) your mp4 file is uploaded and the format is validated, (2) the file content is decoded into its raw representation, (3) the data is re-encoded in bmp format with optimal settings, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you You need maximum device and software compatibility. For the opposite direction, CocoConvert also supports BMP to MP4 conversion.
How to Convert MP4 to BMP
- 1
Upload .mp4 file
Select your MP4 file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .bmp
Set BMP as the output format. The converter uses optimal settings based on the MP4→BMP conversion profile.
- 3
Convert
The server-side engine decodes your MP4 file and re-encodes it as BMP. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .bmp file. Multiple output files can be downloaded together.
What Happens When You Convert MP4 to BMP
Your MP4 file is decoded and re-encoded as BMP.
Your MP4 file is uploaded and the format is validated
The file content is decoded into its raw representation
The data is re-encoded in BMP format with optimal settings
The converted file is ready for download
MP4 vs BMP — Detailed Comparison
| Feature | .MP4 | .BMP |
|---|---|---|
| Full Name | MPEG-4 Part 14 | Bitmap Image |
| Compression | Lossy | None (uncompressed) |
| Transparency | — | No |
| Animation | — | No |
| Color Depth | 8-bit (H.264) or 10-bit (H.265/AV1) | up to 32 bits/channel |
| HDR Support | Yes | No |
| Typical File Size | 50–200 MB per minute (1080p H.264) | 10–50 MB per photo (uncompressed) |
| Platform Support | Universal | Universal |
| Browser Support | Universal | Limited |
| Year Created | 2001 | 1986 |
| Open Standard | Yes | No |
Should You Convert MP4 to BMP?
When to Convert
- ✓You need just the audio track from a video recording
- ✓You're creating a podcast or audio file from video content
- ✓You need maximum device and software compatibility
When NOT to Convert
- ✗You're hoping to improve image/audio quality — converting lossy to lossless cannot recover lost data
- ✗You want to preserve HDR information — BMP only supports standard dynamic range
Common Mistakes When Converting MP4 to BMP
"Converting MP4 to BMP will improve the quality"
No. MP4 has already permanently discarded data during compression. Converting to BMP preserves what's left but cannot restore lost detail. The file will just be larger.
"BMP will be smaller than my MP4 file"
BMP uses no compression, so the output file is often larger than a lossy MP4. If you need a small file, BMP may not be the right choice.
Frequently Asked Questions
What is the difference between MP4 and BMP?
MP4 (MPEG-4 Part 14) is the universal video container supporting H.264/H.265 codecs — plays on virtually every device. BMP is an uncompressed raster format that preserves every pixel but produces very large files. Full Name: MP4 uses MPEG-4 Part 14, while BMP uses Bitmap Image. Compression: MP4 uses Lossy, while BMP uses None (uncompressed). Transparency: MP4 uses —, while BMP uses No.
Does MP4 to BMP conversion affect quality?
Your MP4 file may contain HDR (High Dynamic Range) data. BMP only supports standard dynamic range (SDR). Highlights and shadows will be compressed to fit the 8-bit range — subtle detail in very bright or dark areas may be lost.
Which format has better compression, MP4 or BMP?
MP4 uses lossy compression. BMP uses none compression. The better choice depends on whether you prioritize file size or quality.
How long does MP4 to BMP conversion take?
Most conversions finish in seconds. Larger files or complex video content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is MP4 or BMP better for long-term storage?
BMP is better for archival since it preserves all original data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.